As of 08:56 PDT

Bostonia, CA weather in September

75°

Bostonia, Sunday, 9 August, 08:56

Clear. Feels like 76°. High 89°, low 71°.

Pressure29.88 inHg

Wind4.6 mph W

Humidity82%

Visibility6.2 mi

Dew point69°

See detailed hourly forecast

In September, Bostonia, CA averages a high of 83.9° and a low of 64.3°. About 0.3 inches of precipitation fall over the month (1 wet days). The record high is 108.7° (2020) and the record low 50.5° (1971). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	86.4°	66.4°	3%	100.8° (2002)	57.6° (1964)
2	86.7°	66.9°	3%	99° (2007)	55.2° (1964)
3	86.5°	67.1°	3%	104.4° (1988)	57° (1999)
4	87.4°	67.1°	3%	102° (1988)	56.8° (1999)
5	87.6°	67.3°	2%	108.7° (2020)	57.6° (1970)
6	87.3°	67.3°	7%	104.9° (2020)	57.4° (1973)
7	87.1°	67.1°	3%	101.1° (2024)	57.2° (1985)
8	86.4°	66.7°	2%	108.1° (2024)	53.1° (1965)
9	85.1°	66.2°	5%	99.3° (2024)	53.1° (1961)
10	84°	65.5°	7%	98.2° (1990)	54.3° (2010)
11	83.7°	64.8°	5%	99.3° (1963)	54.3° (1975)
12	83.3°	64°	2%	102.6° (1971)	51.8° (1985)
13	82.4°	63.9°	0%	103.5° (1971)	55.8° (1972)
14	82.8°	63.3°	3%	99.3° (2014)	54.7° (1994)
15	82.8°	63.5°	7%	99.3° (2012)	54.3° (2016)
16	82.4°	63.7°	5%	99.9° (2014)	55.8° (1970)
17	82.2°	63.1°	7%	100.4° (2020)	55.6° (1977)
18	81.9°	62.6°	5%	99.9° (2020)	53.1° (1993)
19	81.1°	62.6°	7%	96.1° (1979)	51.8° (1978)
20	80.8°	62.1°	8%	99° (2015)	51.8° (1989)
21	82°	61.5°	5%	96.8° (2021)	51.3° (1968)
22	83.1°	62.1°	8%	97.7° (1975)	51.8° (1988)
23	84°	63.1°	5%	100.8° (1978)	54.1° (1961)
24	84.2°	63°	2%	102.7° (1978)	53.6° (2007)
25	83.3°	63°	3%	102.7° (1978)	55.6° (2005)
26	82°	63.5°	10%	104.5° (1963)	54.7° (1972)
27	82.4°	63.3°	2%	103.6° (1963)	52.2° (2013)
28	82.6°	62.6°	2%	103.1° (1963)	50.5° (1971)
29	82.4°	63°	7%	101.3° (2020)	51.1° (1965)
30	83.1°	62.4°	5%	106.3° (2020)	52.3° (1982)